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Finding the Fourth Proportional to 426,805.17, 640,296.15 and 174,086.37

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Solution

The fourth proportional to 426,805.17, 640,296.15 and 174,086.37 is: 261,165.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,805.17 : 640,296.15 = 174,086.37 : x
  2. Step 2: Convert to fraction form
    426,805.17/640,296.15 = 174,086.37/x
  3. Step 3: Cross multiply
    426,805.17x = 640,296.15 × 174,086.37
  4. Step 4: Simplify right side
    426,805.17x = 111,466,832,478.48
  5. Step 5: Solve for x
    x = 111,466,832,478.48/426,805.17
  6. Step 6: Final answer
    x = 261,165.61

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.